Which of the following types of sampling is considered to be the weakest?

a. Cluster
b. Convenience
c. Quota
d. Systematic


ANS: B
Multiple biases may exist in a convenience sample, some of which may be subtle and unrecognized. There is little opportunity to control for bias in a convenience sample.
Cluster sampling is a type of random sampling and much stronger than convenience sampling.
Quota provides for a more representative sample than convenience sampling, so it is stronger.
Systematic sampling is a type of random sampling and much stronger than convenience sampling.

Nursing

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